Configuring BGP for Overload Conditions

You can specify how you want BGP to behave when it is running out of memory in an overload condition. You can have BGP either shut itself down or continue running; in the latter case, BGP performance might be altered because of the lack of resources.

overload shutdown

• Use to shut down BGP if it runs out of memory.
• The default behavior is for BGP to transition from the Up state to the Overload state and continue running.
• This command takes effect immediately.
• Example

  host1(config-router)#overload shutdown

• Use the no version to restore the default behavior.
• See overload shutdown.

The following partial outputs show how the BGP state is indicated by the show ip bgp summary command:

host1#show ip bgp summary
Local router ID 10.1.0.1, local AS 1
  Administrative state is Start
  Operational state is Overload
  Shutdown in overload state is disabled
  Default local preference is 100
...
host1#show ip bgp summary
Local router ID 10.1.0.1, local AS 1
  Administrative state is Start
  Operational state is Down due to transition from Overload state
  Shutdown in overload state is enabled
  Default local preference is 100
...

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